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Browse credit cards from a variety of issuers to see if there's a better card for you.
You can have both of them... The debit card simply ties to your bank account.
I have both....
You can have both the red card and debit card. You just need to provide a blank check and you're approved. It works the same way as the red card with a 5% discount on all purchases except it takes the funds from your checking account.